Unassuming kid successfully lobs Roger Federer on World Tennis Day

Roger Federer Stunned By Kids Perfect Lob Shot by HotGirl

Tuesday marked World Tennis Day, and in celebration, the sport's most talented players gathered for festivities at New York City's Madison Square Garden. Among the greats were Roger Federer and Grigor Dimitrov, who came out to play an exhibition and, in Dimitrov's case, to bend the rules a bit more than is usually allowed.

When the